<!doctype html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>基础的HTML5页面</title>
<script type="text/javascript" src="bootstarp.js"></script>
</head>

<body>
  <div id="canvas-warp">
    <canvas id="canvas" style="border: 1px solid #aaaaaa; display: block; margin: 50px auto;">
      你的浏览器居然不支持Canvas？！赶快换一个吧！！
   </canvas>
  </div>
</body> 

</html>